Easy to operate: the audio amplifier features an independent volume control knob and separate bass and treble control knobs for intuitive, simple adjustment. Wide applications: hifi stereo receiver amplifier that supports RCA and 3.5mm auxiliary input; suitable for car, computer, laptop, tablet, phone, TV and more. Durable material: built with aluminum alloy, offering sturdy and durable construction, performance, and long service life. Stereo sound: 12V mini amplifier delivering practical and powerful hifi stereo surround sound quality with clear and delicate output. Use scenarios: Incar audio upgrade: connect via RCA or 3.5mm aux to the car stereo to improve sound clarity and depth. Desktop or laptop workstation: pair with a computer or laptop to enhance music, movies, and gaming with richer stereo sound. Home TV or tablet setup: use with a TV or tablet to boost audio performance for movies, streaming, and videos.